From 855e59061f54a28fc0eeeffcba4d9d68aacc61f8 Mon Sep 17 00:00:00 2001
From: Manish Godse <61718172+mangod9@users.noreply.github.com>
Date: Sun, 9 Aug 2020 18:26:51 -0700
Subject: [PATCH] check for Null returned from Assembly.GetEntryAssembly

Fixes 40588
---
 .../src/System/Xml/Serialization/Compilation.cs                 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libraries/System.Private.Xml/src/System/Xml/Serialization/Compilation.cs b/src/libraries/System.Private.Xml/src/System/Xml/Serialization/Compilation.cs
index fe7d84f63bd4be..67ce05acdec292 100644
--- a/src/libraries/System.Private.Xml/src/System/Xml/Serialization/Compilation.cs
+++ b/src/libraries/System.Private.Xml/src/System/Xml/Serialization/Compilation.cs
@@ -163,7 +163,7 @@ internal static Assembly LoadGeneratedAssembly(Type type, string defaultNamespac
                         serializerPath = Path.Combine(Path.GetDirectoryName(type.Assembly.Location), serializerName + ".dll");
                     }
 
-                    if ((string.IsNullOrEmpty(serializerPath) || !File.Exists(serializerPath)) && !string.IsNullOrEmpty(Assembly.GetEntryAssembly().Location))
+                    if ((string.IsNullOrEmpty(serializerPath) || !File.Exists(serializerPath)) && !string.IsNullOrEmpty(Assembly.GetEntryAssembly()?.Location))
                     {
                         serializerPath = Path.Combine(Path.GetDirectoryName(Assembly.GetEntryAssembly().Location), serializerName + ".dll");
                     }